On an annual average, per capita basis my household goes through 0.5 g/person-day.
Contextual notes: On working days household members do not smoke weed all day and tend limit themselves to approximately 5 hours of constant highness per day. On non-working days the time spend not high depends largely on if heavy machinery is used.
I'm not going to calculate how many working days occur in the year for this household as I am high and don't want to.
Hell yeah, recapture that child-like wonder